I may be wrong, I just got the info from the maps and my own knowledge. Add some if you know any.
Carnivora building(1950-1985)- Now Night Hunters, this featured lions, tigers and hyenas.
Cat House(1985-2011)-Now also Night Hunters, this building housed the largest collection of small cats, there were animals like lynxes, margays, leopards, and many more.
Herbivore Building(1906-N/A)- Now the elephant house, this area showcased kangaroos, hippos, rhinos, elephants, and giraffes.
Vanishing Giants(2000-2008)- Now Elephant Reserve, okapis, giraffes and elephants were featured here.
Walk-through Flight Cage(1962-2006)- Now Lorikeet Landing, it featured birds from all over the world.
Nocturnal House(1964-2011)- This building is closed, it featured creatures like aardvarks, owls, bats and more.
Ape House(1951-N/A)- Now the 4-D Theatre, this building featured great apes like chimps, orangutans, gibbons and gorillas.
Big Cat Canyon(1975-1998)- Now Siegfried and Roy's White lions of Timbavati, this exhibit featured three white tigers.
Reptile House(1937-1951) Now Wings of the World, this building featured many snakes, turtles, and lizards.
Giant Panda exhibit(1988-6 weeks)- Now Dragons!, this building featured Chia-Chia, a giant panda for 6 weeks.
Elk Park and Virginia Deer Park(Maybe 1875-1941)-Now Wildlife Canyon, this area was two large yard for many elk and deer.
Deer Line(1942-1989)- Now Wildlife Canyon, this featured many hoofed animals like bison, red deer, and llamas.
Monkey House(1875-1951)- Now the Reptile House, this building featured primate species like mandrills and Suzie the world's first trained gorilla.
Cat Grottoes(1934-N/A)- Will soon be Cat Canyon, this area was the first bar-less exhibits at the zoo for African birds, lions and tigers.
Aquarium(Early 1950's-1998)- Now Manatee Springs, this building consists of many tanks for tropical fish and sharks.
Bird Aviaries(1875-1952) Now part of Gorilla World, this consisted of 6 large cages that all but 5 were torn down. That one cage became the Passenger Pigeon Memorial in 1977.
Otter Basin(1875-2005) Now Wolf Woods, this was part of the Children's Zoo that featured river otters, foxes, skunks, and even a cheetah exhibit. Was later called Otter Creek around the time of the Children's Zoos opening in the 80's.
Carnivora building(1950-1985)- Now Night Hunters, this featured lions, tigers and hyenas.
Cat House(1985-2011)-Now also Night Hunters, this building housed the largest collection of small cats, there were animals like lynxes, margays, leopards, and many more.
Herbivore Building(1906-N/A)- Now the elephant house, this area showcased kangaroos, hippos, rhinos, elephants, and giraffes.
Vanishing Giants(2000-2008)- Now Elephant Reserve, okapis, giraffes and elephants were featured here.
Walk-through Flight Cage(1962-2006)- Now Lorikeet Landing, it featured birds from all over the world.
Nocturnal House(1964-2011)- This building is closed, it featured creatures like aardvarks, owls, bats and more.
Ape House(1951-N/A)- Now the 4-D Theatre, this building featured great apes like chimps, orangutans, gibbons and gorillas.
Big Cat Canyon(1975-1998)- Now Siegfried and Roy's White lions of Timbavati, this exhibit featured three white tigers.
Reptile House(1937-1951) Now Wings of the World, this building featured many snakes, turtles, and lizards.
Giant Panda exhibit(1988-6 weeks)- Now Dragons!, this building featured Chia-Chia, a giant panda for 6 weeks.
Elk Park and Virginia Deer Park(Maybe 1875-1941)-Now Wildlife Canyon, this area was two large yard for many elk and deer.
Deer Line(1942-1989)- Now Wildlife Canyon, this featured many hoofed animals like bison, red deer, and llamas.
Monkey House(1875-1951)- Now the Reptile House, this building featured primate species like mandrills and Suzie the world's first trained gorilla.
Cat Grottoes(1934-N/A)- Will soon be Cat Canyon, this area was the first bar-less exhibits at the zoo for African birds, lions and tigers.
Aquarium(Early 1950's-1998)- Now Manatee Springs, this building consists of many tanks for tropical fish and sharks.
Bird Aviaries(1875-1952) Now part of Gorilla World, this consisted of 6 large cages that all but 5 were torn down. That one cage became the Passenger Pigeon Memorial in 1977.
Otter Basin(1875-2005) Now Wolf Woods, this was part of the Children's Zoo that featured river otters, foxes, skunks, and even a cheetah exhibit. Was later called Otter Creek around the time of the Children's Zoos opening in the 80's.